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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        /**
         * 算术运算符
         */ 
        a = 5
        b = 2
        // console.log(a+b)
        // console.log(a-b)
        // console.log(a*b)
        // console.log(a/b)
        // console.log(a%b)
        // console.log(a**b)


        /**
         * 比较运算符
         */ 
        c = '5'
        console.log(a==c) // 只判断值
        console.log(a===c) // 全等于：同时判断值和类型
    </script>
</head>
<body>
    
</body>
</html>